]> git.saurik.com Git - wxWidgets.git/blobdiff - src/msw/ole/automtn.cpp
Fix problem with COMDLG_FILTERSPEC declaration with MinGW-w64 4.8.
[wxWidgets.git] / src / msw / ole / automtn.cpp
index 6dff2255e48711cdc2d749bdb7ce86f75259f15a..b3f5f72e4aeb619c900e461ecf8b54384662dc5a 100644 (file)
 /////////////////////////////////////////////////////////////////////////////
-// Name:        automtn.cpp
+// Name:        src/msw/ole/automtn.cpp
 // Purpose:     OLE automation utilities
 // Author:      Julian Smart
 // Modified by:
 // Created:     11/6/98
-// RCS-ID:      $Id$
 // Copyright:   (c) 1998, Julian Smart
-// Licence:     wxWindows Licence
+// Licence:     wxWindows licence
 /////////////////////////////////////////////////////////////////////////////
 
-#ifdef __GNUG__
-#pragma implementation "automtn.h"
-#endif
-
 // For compilers that support precompilation, includes "wx.h".
 #include "wx/wxprec.h"
 
 #if defined(__BORLANDC__)
-#pragma hdrstop
+    #pragma hdrstop
 #endif
 
-#include "wx/log.h"
-#include "wx/msw/ole/automtn.h"
-
-#include <windows.h>
-#include <ole2ver.h>
-#include <oleauto.h>
-#include <math.h>
-#include <time.h>
+// With Borland C++, all samples crash if this is compiled in.
+#if (defined(__BORLANDC__) && (__BORLANDC__ < 0x520)) || defined(__CYGWIN10__)
+    #undef wxUSE_OLE_AUTOMATION
+    #define wxUSE_OLE_AUTOMATION 0
+#endif
 
-#ifdef GetObject
-#undef GetObject
+#ifndef WX_PRECOMP
+    #include "wx/log.h"
+    #include "wx/math.h"
 #endif
 
-// wrapper around BSTR type (by Vadim Zeitlin)
+#define _FORCENAMELESSUNION
+#include "wx/msw/private.h"
+#include "wx/msw/ole/oleutils.h"
+#include "wx/msw/ole/automtn.h"
 
-class WXDLLEXPORT BasicString
-{
-public:
-  // ctors & dtor
-  BasicString(const char *sz);
- ~BasicString();
-
-  // accessors
-    // just get the string
-  operator BSTR() const { return m_wzBuf; }
-    // retrieve a copy of our string - caller must SysFreeString() it later!
-  BSTR Get() const { return SysAllocString(m_wzBuf); }
-
-private:
-  // @@@ not implemented (but should be)
-  BasicString(const BasicString&);
-  BasicString& operator=(const BasicString&);
-
-  OLECHAR *m_wzBuf;     // actual string
-};
+#ifdef __WXWINCE__
+#include "wx/msw/wince/time.h"
+#else
+#include <time.h>
+#endif
 
-// Convert variants
-static bool ConvertVariantToOle(const wxVariant& variant, VARIANTARG& oleVariant) ;
-static bool ConvertOleToVariant(const VARIANTARG& oleVariant, wxVariant& variant) ;
+#include <wtypes.h>
+#include <unknwn.h>
 
-// Convert string to Unicode
-static BSTR ConvertStringToOle(const wxString& str);
+#include <ole2.h>
+#define _huge
 
-// Convert string from BSTR to wxString
-static wxString ConvertStringFromOle(BSTR bStr);
+#ifndef __WXWINCE__
+#include <ole2ver.h>
+#endif
 
-// Verifies will fail if the needed buffer size is too large
-#define MAX_TIME_BUFFER_SIZE    128         // matches that in timecore.cpp
-#define MIN_DATE                (-657434L)  // about year 100
-#define MAX_DATE                2958465L    // about year 9999
+#include <oleauto.h>
 
-// Half a second, expressed in days
-#define HALF_SECOND  (1.0/172800.0)
+#if wxUSE_DATETIME
+#include "wx/datetime.h"
+#endif // wxUSE_DATETIME
 
-// One-based array of days in year at month start
-static int rgMonthDays[13] =
-       {0, 31, 59, 90, 120, 151, 181, 212, 243, 273, 304, 334, 365};
+#if wxUSE_OLE_AUTOMATION
 
-static BOOL OleDateFromTm(WORD wYear, WORD wMonth, WORD wDay,
-       WORD wHour, WORD wMinute, WORD wSecond, DATE& dtDest);
-static BOOL TmFromOleDate(DATE dtSrc, struct tm& tmDest);
-static void TmConvertToStandardFormat(struct tm& tmSrc);
-static double DoubleFromDate(DATE dt);
-static DATE DateFromDouble(double dbl);
+#include <wx/vector.h>
 
-static void ClearVariant(VARIANTARG *pvarg) ;
-static void ReleaseVariant(VARIANTARG *pvarg) ;
-// static void ShowException(LPOLESTR szMember, HRESULT hr, EXCEPINFO *pexcep, unsigned int uiArgErr);
+// Report an OLE error when calling the specified method to the user via wxLog.
+static void
+ShowException(const wxString& member,
+              HRESULT hr,
+              EXCEPINFO *pexcep = NULL,
+              unsigned int uiArgErr = 0);
 
-/*
- * wxAutomationObject
- */
+// wxAutomationObject
 
 wxAutomationObject::wxAutomationObject(WXIDISPATCH* dispatchPtr)
 {
-       m_dispatchPtr = dispatchPtr;
+    m_dispatchPtr = dispatchPtr;
+    m_lcid = LOCALE_SYSTEM_DEFAULT;
 }
 
 wxAutomationObject::~wxAutomationObject()
 {
-       if (m_dispatchPtr)
-       {
-               ((IDispatch*)m_dispatchPtr)->Release();
-               m_dispatchPtr = NULL;
-       }
+    if (m_dispatchPtr)
+    {
+        ((IDispatch*)m_dispatchPtr)->Release();
+        m_dispatchPtr = NULL;
+    }
 }
 
+namespace
+{
+
+// A simple helper that ensures that VARIANT is destroyed on scope exit.
+struct wxOleVariantArg : VARIANTARG
+{
+    wxOleVariantArg()  { VariantInit(this);  }
+    ~wxOleVariantArg() { VariantClear(this); }
+};
+
+} // anonymous namespace
+
+
 #define INVOKEARG(i) (args ? args[i] : *(ptrArgs[i]))
 
 // For Put/Get, no named arguments are allowed.
+// WARNING: if args contain IDispatches, their reference count will be decreased
+// by one after Invoke() returns!
 bool wxAutomationObject::Invoke(const wxString& member, int action,
         wxVariant& retValue, int noArgs, wxVariant args[], const wxVariant* ptrArgs[]) const
 {
-       if (!m_dispatchPtr)
-               return FALSE;
-
-       // nonConstMember is necessary because the wxString class doesn't have enough consts...
-       wxString nonConstMember(member);
-
-       int ch = nonConstMember.Find('.');
-       if (ch != -1)
-       {
-               // Use dot notation to get the next object
-               wxString member2(nonConstMember.Left((size_t) ch));
-               wxString rest(nonConstMember.Right(nonConstMember.Length() - ch - 1));
-               wxAutomationObject obj;
-               if (!GetObject(obj, member2))
-                       return FALSE;
-               return obj.Invoke(rest, action, retValue, noArgs, args, ptrArgs);
-       }
-
-       VARIANTARG vReturn;
-       ClearVariant(& vReturn);
-
-       VARIANTARG* vReturnPtr = & vReturn;
-
-       // Find number of names args
-       int namedArgCount = 0;
-       int i;
-       for (i = 0; i < noArgs; i++)
-               if (!INVOKEARG(i).GetName().IsNull())
-               {
-                       namedArgCount ++;
-               }
-
-       int namedArgStringCount = namedArgCount + 1;
-       BSTR* argNames = new BSTR[namedArgStringCount];
-       argNames[0] = ConvertStringToOle(member);
-
-       // Note that arguments are specified in reverse order
-       // (all totally logical; hey, we're dealing with OLE here.)
-
-       int j = 0;
-       for (i = 0; i < namedArgCount; i++)
-       {       
-               if (!INVOKEARG(i).GetName().IsNull())
-               {
-                       argNames[(namedArgCount-j)] = ConvertStringToOle(INVOKEARG(i).GetName());
-                       j ++;
-               }
-       }
-
-       // + 1 for the member name, + 1 again in case we're a 'put'
-       DISPID* dispIds = new DISPID[namedArgCount + 2];
-
-       HRESULT hr;
-       DISPPARAMS dispparams;
-       unsigned int uiArgErr;
-       EXCEPINFO excep;
-       
-       // Get the IDs for the member and its arguments.  GetIDsOfNames expects the
-       // member name as the first name, followed by argument names (if any).
-       hr = ((IDispatch*)m_dispatchPtr)->GetIDsOfNames(IID_NULL, argNames,
-                                                               1 + namedArgCount, LOCALE_SYSTEM_DEFAULT, dispIds);
-       if (FAILED(hr)) 
-       {
-//             ShowException(szMember, hr, NULL, 0);
-               return FALSE;
-       }
-
-       // if doing a property put(ref), we need to adjust the first argument to have a
-       // named arg of DISPID_PROPERTYPUT.
-       if (action & (DISPATCH_PROPERTYPUT | DISPATCH_PROPERTYPUTREF))
-       {
-               namedArgCount = 1;
-               dispIds[1] = DISPID_PROPERTYPUT;
-               vReturnPtr = (VARIANTARG*) NULL;
-       }
-
-       // Convert the wxVariants to VARIANTARGs
-       VARIANTARG* oleArgs = new VARIANTARG[noArgs];
-       for (i = 0; i < noArgs; i++)
-       {
-               // Again, reverse args
-               if (!ConvertVariantToOle(INVOKEARG((noArgs-1) - i), oleArgs[i]))
-                       return FALSE; // TODO: clean up memory at this point
-       }
-
-       dispparams.rgdispidNamedArgs = dispIds + 1;
-       dispparams.rgvarg = oleArgs;
-       dispparams.cArgs = noArgs;
-       dispparams.cNamedArgs = namedArgCount;
-       
-       excep.pfnDeferredFillIn = NULL;
-       
-       hr = ((IDispatch*)m_dispatchPtr)->Invoke(dispIds[0], IID_NULL, LOCALE_SYSTEM_DEFAULT,
-                                               action, &dispparams, vReturnPtr, &excep, &uiArgErr);
-
-       for (i = 0; i < namedArgStringCount; i++)
-       {
-               SysFreeString(argNames[i]);
-       }
-       delete[] argNames;
-       delete[] dispIds;
-       
-       for (i = 0; i < noArgs; i++)
-               ReleaseVariant(& oleArgs[i]) ;
-       delete[] oleArgs;
-       
-       if (FAILED(hr)) 
-       {
-               // display the exception information if appropriate:
-//             ShowException((const char*) member, hr, &excep, uiArgErr);
-       
-               // free exception structure information
-               SysFreeString(excep.bstrSource);
-               SysFreeString(excep.bstrDescription);
-               SysFreeString(excep.bstrHelpFile);
-
-               if (vReturnPtr)
-                       ReleaseVariant(vReturnPtr);
-               return FALSE;
-       }
-       else
-       {
-               if (vReturnPtr)
-               {
-                       // Convert result to wxVariant form
-                       ConvertOleToVariant(vReturn, retValue);
-                       // Mustn't release the dispatch pointer
-                       if (vReturn.vt == VT_DISPATCH)
-                       {
-                               vReturn.pdispVal = (IDispatch*) NULL;
-                       }
-                       ReleaseVariant(& vReturn);
-               }
-       }
-       return TRUE;
-}
+    if (!m_dispatchPtr)
+        return false;
 
-// Invoke a member function
-wxVariant wxAutomationObject::CallMethod(const wxString& member, int noArgs, wxVariant args[])
-{
-       wxVariant retVariant;
-       if (!Invoke(member, DISPATCH_METHOD, retVariant, noArgs, args))
-       {
-               retVariant.MakeNull();
-       }
-       return retVariant;
-}
+    int ch = member.Find('.');
+    if (ch != -1)
+    {
+        // Use dot notation to get the next object
+        wxString member2(member.Left((size_t) ch));
+        wxString rest(member.Right(member.length() - ch - 1));
+        wxAutomationObject obj;
+        if (!GetObject(obj, member2))
+            return false;
+        return obj.Invoke(rest, action, retValue, noArgs, args, ptrArgs);
+    }
 
-wxVariant wxAutomationObject::CallMethod(const wxString& member,
-               const wxVariant& arg1, const wxVariant& arg2,
-               const wxVariant& arg3, const wxVariant& arg4,
-               const wxVariant& arg5, const wxVariant& arg6)
-{
-       const wxVariant** args = new const wxVariant*[6];
-       int i = 0;
-       if (!arg1.IsNull())
-       {
-               args[i] = & arg1;
-               i ++;
-       }
-       if (!arg2.IsNull())
-       {
-               args[i] = & arg2;
-               i ++;
-       }
-       if (!arg3.IsNull())
-       {
-               args[i] = & arg3;
-               i ++;
-       }
-       if (!arg4.IsNull())
-       {
-               args[i] = & arg4;
-               i ++;
-       }
-       if (!arg5.IsNull())
-       {
-               args[i] = & arg5;
-               i ++;
-       }
-       if (!arg6.IsNull())
-       {
-               args[i] = & arg6;
-               i ++;
-       }
-       wxVariant retVariant;
-       if (!Invoke(member, DISPATCH_METHOD, retVariant, i, NULL, args))
-       {
-               retVariant.MakeNull();
-       }
-       delete[] args;
-       return retVariant;
-}
+    wxOleVariantArg vReturn;
+    wxOleVariantArg* vReturnPtr = & vReturn;
 
-// Get/Set property
-wxVariant wxAutomationObject::GetProperty(const wxString& property, int noArgs, wxVariant args[]) const
-{
-       wxVariant retVariant;
-       if (!Invoke(property, DISPATCH_PROPERTYGET, retVariant, noArgs, args))
-       {
-               retVariant.MakeNull();
-       }
-       return retVariant;
-}
+    // Find number of names args
+    int namedArgCount = 0;
+    int i;
+    for (i = 0; i < noArgs; i++)
+    {
+        if ( !INVOKEARG(i).GetName().empty() )
+        {
+            namedArgCount ++;
+        }
+    }
 
-wxVariant wxAutomationObject::GetProperty(const wxString& property,
-               const wxVariant& arg1, const wxVariant& arg2,
-               const wxVariant& arg3, const wxVariant& arg4,
-               const wxVariant& arg5, const wxVariant& arg6)
-{
-       const wxVariant** args = new const wxVariant*[6];
-       int i = 0;
-       if (!arg1.IsNull())
-       {
-               args[i] = & arg1;
-               i ++;
-       }
-       if (!arg2.IsNull())
-       {
-               args[i] = & arg2;
-               i ++;
-       }
-       if (!arg3.IsNull())
-       {
-               args[i] = & arg3;
-               i ++;
-       }
-       if (!arg4.IsNull())
-       {
-               args[i] = & arg4;
-               i ++;
-       }
-       if (!arg5.IsNull())
-       {
-               args[i] = & arg5;
-               i ++;
-       }
-       if (!arg6.IsNull())
-       {
-               args[i] = & arg6;
-               i ++;
-       }
-       wxVariant retVariant;
-       if (!Invoke(property, DISPATCH_PROPERTYGET, retVariant, i, NULL, args))
-       {
-               retVariant.MakeNull();
-       }
-       delete[] args;
-       return retVariant;
-}
+    int namedArgStringCount = namedArgCount + 1;
+    wxVector<wxBasicString> argNames(namedArgStringCount, wxString());
+    argNames[0] = member;
 
-bool wxAutomationObject::PutProperty(const wxString& property, int noArgs, wxVariant args[])
-{
-       wxVariant retVariant;
-       if (!Invoke(property, DISPATCH_PROPERTYPUT, retVariant, noArgs, args))
-       {
-               return FALSE;
-       }
-       return TRUE;
+    // Note that arguments are specified in reverse order
+    // (all totally logical; hey, we're dealing with OLE here.)
+
+    int j = 0;
+    for (i = 0; i < namedArgCount; i++)
+    {
+        if ( !INVOKEARG(i).GetName().empty() )
+        {
+            argNames[(namedArgCount-j)] = INVOKEARG(i).GetName();
+            j ++;
+        }
+    }
+
+    // + 1 for the member name, + 1 again in case we're a 'put'
+    wxVector<DISPID> dispIds(namedArgCount + 2);
+
+    HRESULT hr;
+    DISPPARAMS dispparams;
+    unsigned int uiArgErr;
+
+    // Get the IDs for the member and its arguments.  GetIDsOfNames expects the
+    // member name as the first name, followed by argument names (if any).
+    hr = ((IDispatch*)m_dispatchPtr)->GetIDsOfNames(IID_NULL,
+                                // We rely on the fact that wxBasicString is
+                                // just BSTR with some methods here.
+                                reinterpret_cast<BSTR *>(&argNames[0]),
+                                1 + namedArgCount, m_lcid, &dispIds[0]);
+    if (FAILED(hr))
+    {
+        ShowException(member, hr);
+        return false;
+    }
+
+    // if doing a property put(ref), we need to adjust the first argument to have a
+    // named arg of DISPID_PROPERTYPUT.
+    if (action & (DISPATCH_PROPERTYPUT | DISPATCH_PROPERTYPUTREF))
+    {
+        namedArgCount = 1;
+        dispIds[1] = DISPID_PROPERTYPUT;
+        vReturnPtr = NULL;
+    }
+
+    // Convert the wxVariants to VARIANTARGs
+    wxVector<wxOleVariantArg> oleArgs(noArgs);
+    for (i = 0; i < noArgs; i++)
+    {
+        // Again, reverse args
+        if (!wxConvertVariantToOle(INVOKEARG((noArgs-1) - i), oleArgs[i]))
+            return false;
+    }
+
+    dispparams.rgdispidNamedArgs = &dispIds[0] + 1;
+    dispparams.rgvarg = oleArgs.empty() ? NULL : &oleArgs[0];
+    dispparams.cArgs = noArgs;
+    dispparams.cNamedArgs = namedArgCount;
+
+    EXCEPINFO excep;
+    wxZeroMemory(excep);
+
+    hr = ((IDispatch*)m_dispatchPtr)->Invoke(dispIds[0], IID_NULL, m_lcid,
+                        (WORD)action, &dispparams, vReturnPtr, &excep, &uiArgErr);
+
+    if (FAILED(hr))
+    {
+        // display the exception information if appropriate:
+        ShowException(member, hr, &excep, uiArgErr);
+
+        // free exception structure information
+        SysFreeString(excep.bstrSource);
+        SysFreeString(excep.bstrDescription);
+        SysFreeString(excep.bstrHelpFile);
+
+        return false;
+    }
+    else
+    {
+        if (vReturnPtr)
+        {
+            // Convert result to wxVariant form
+            if (!wxConvertOleToVariant(vReturn, retValue))
+                return false;
+            // Mustn't release the dispatch pointer
+            if (vReturn.vt == VT_DISPATCH)
+            {
+                vReturn.pdispVal = NULL;
+            }
+            // Mustn't free the SAFEARRAY if it is contained in the retValue
+            if ((vReturn.vt & VT_ARRAY) &&
+                    retValue.GetType() == wxS("safearray"))
+            {
+                vReturn.parray = NULL;
+            }
+        }
+    }
+    return true;
 }
 
-bool wxAutomationObject::PutProperty(const wxString& property,
-               const wxVariant& arg1, const wxVariant& arg2,
-               const wxVariant& arg3, const wxVariant& arg4,
-               const wxVariant& arg5, const wxVariant& arg6)
+// Invoke a member function
+wxVariant wxAutomationObject::CallMethod(const wxString& member, int noArgs, wxVariant args[])
 {
-       const wxVariant** args = new const wxVariant*[6];
-       int i = 0;
-       if (!arg1.IsNull())
-       {
-               args[i] = & arg1;
-               i ++;
-       }
-       if (!arg2.IsNull())
-       {
-               args[i] = & arg2;
-               i ++;
-       }
-       if (!arg3.IsNull())
-       {
-               args[i] = & arg3;
-               i ++;
-       }
-       if (!arg4.IsNull())
-       {
-               args[i] = & arg4;
-               i ++;
-       }
-       if (!arg5.IsNull())
-       {
-               args[i] = & arg5;
-               i ++;
-       }
-       if (!arg6.IsNull())
-       {
-               args[i] = & arg6;
-               i ++;
-       }
-       wxVariant retVariant;
-       bool ret = Invoke(property, DISPATCH_PROPERTYPUT, retVariant, i, NULL, args);
-       delete[] args;
-       return ret;
+    wxVariant retVariant;
+    if (!Invoke(member, DISPATCH_METHOD, retVariant, noArgs, args))
+    {
+        retVariant.MakeNull();
+    }
+    return retVariant;
 }
 
-
-// Uses DISPATCH_PROPERTYGET
-// and returns a dispatch pointer. The calling code should call Release
-// on the pointer, though this could be implicit by constructing an wxAutomationObject
-// with it and letting the destructor call Release.
-WXIDISPATCH* wxAutomationObject::GetDispatchProperty(const wxString& property, int noArgs, wxVariant args[]) const
+wxVariant wxAutomationObject::CallMethodArray(const wxString& member, int noArgs, const wxVariant **args)
 {
-       wxVariant retVariant;
-       if (Invoke(property, DISPATCH_PROPERTYGET, retVariant, noArgs, args))
-       {
-               if (retVariant.GetType() == "void*")
-               {
-                       return (WXIDISPATCH*) retVariant.GetVoidPtr();
-               }
-               else
-               {
-                       return (WXIDISPATCH*) NULL;
-               }
-       }
-       else
-               return (WXIDISPATCH*) NULL;
+    wxVariant retVariant;
+    if (!Invoke(member, DISPATCH_METHOD, retVariant, noArgs, NULL, args))
+    {
+        retVariant.MakeNull();
+    }
+    return retVariant;
 }
 
-// A way of initialising another wxAutomationObject with a dispatch object
-bool wxAutomationObject::GetObject(wxAutomationObject& obj, const wxString& property, int noArgs, wxVariant args[]) const
+wxVariant wxAutomationObject::CallMethod(const wxString& member,
+        const wxVariant& arg1, const wxVariant& arg2,
+        const wxVariant& arg3, const wxVariant& arg4,
+        const wxVariant& arg5, const wxVariant& arg6)
 {
-       WXIDISPATCH* dispatch = GetDispatchProperty(property, noArgs, args);
-       if (dispatch)
-       {
-               obj.SetDispatchPtr(dispatch);
-               return TRUE;
-       }
-       else
-               return FALSE;
+    const wxVariant** args = new const wxVariant*[6];
+    int i = 0;
+    if (!arg1.IsNull())
+    {
+        args[i] = & arg1;
+        i ++;
+    }
+    if (!arg2.IsNull())
+    {
+        args[i] = & arg2;
+        i ++;
+    }
+    if (!arg3.IsNull())
+    {
+        args[i] = & arg3;
+        i ++;
+    }
+    if (!arg4.IsNull())
+    {
+        args[i] = & arg4;
+        i ++;
+    }
+    if (!arg5.IsNull())
+    {
+        args[i] = & arg5;
+        i ++;
+    }
+    if (!arg6.IsNull())
+    {
+        args[i] = & arg6;
+        i ++;
+    }
+    wxVariant retVariant;
+    if (!Invoke(member, DISPATCH_METHOD, retVariant, i, NULL, args))
+    {
+        retVariant.MakeNull();
+    }
+    delete[] args;
+    return retVariant;
 }
 
-// Get a dispatch pointer from the current object associated
-// with a class id
-bool wxAutomationObject::GetInstance(const wxString& classId) const
+// Get/Set property
+wxVariant wxAutomationObject::GetPropertyArray(const wxString& property, int noArgs, const wxVariant **args) const
 {
-       if (m_dispatchPtr)
-               return FALSE;
-
-       CLSID clsId;
-       IUnknown * pUnk = NULL;
-
-       BasicString unicodeName((const char*) classId);
-       
-       if (FAILED(CLSIDFromProgID((BSTR) unicodeName, &clsId))) 
-       {
-               wxLogWarning("Cannot obtain CLSID from ProgID");
-               return FALSE;
-       }
-
-       if (FAILED(GetActiveObject(clsId, NULL, &pUnk)))
-       {
-               wxLogWarning("Cannot find an active object");
-               return FALSE;
-       }
-       
-       if (pUnk->QueryInterface(IID_IDispatch, (LPVOID*) &m_dispatchPtr) != S_OK)
-       {
-               wxLogWarning("Cannot find IDispatch interface");
-               return FALSE;
-       }
-
-       return TRUE;
+    wxVariant retVariant;
+    if (!Invoke(property, DISPATCH_PROPERTYGET, retVariant, noArgs, NULL, args))
+    {
+        retVariant.MakeNull();
+    }
+    return retVariant;
 }
-
-// Get a dispatch pointer from a new object associated
-// with the given class id
-bool wxAutomationObject::CreateInstance(const wxString& classId) const
+wxVariant wxAutomationObject::GetProperty(const wxString& property, int noArgs, wxVariant args[]) const
 {
-       if (m_dispatchPtr)
-               return FALSE;
-
-       CLSID clsId;
-       IUnknown * pUnk = NULL;
-
-       BasicString unicodeName((const char*) classId);
-       
-       if (FAILED(CLSIDFromProgID((BSTR) unicodeName, &clsId))) 
-       {
-               wxLogWarning("Cannot obtain CLSID from ProgID");
-               return FALSE;
-       }
-
-       // start a new copy of Excel, grab the IDispatch interface
-       if (FAILED(CoCreateInstance(clsId, NULL, CLSCTX_LOCAL_SERVER, IID_IDispatch, (void**)&m_dispatchPtr))) 
-       {
-               wxLogWarning("Cannot start an instance of this class.");
-               return FALSE;
-       }
-       
-       return TRUE;
+    wxVariant retVariant;
+    if (!Invoke(property, DISPATCH_PROPERTYGET, retVariant, noArgs, args))
+    {
+        retVariant.MakeNull();
+    }
+    return retVariant;
 }
 
-
-bool ConvertVariantToOle(const wxVariant& variant, VARIANTARG& oleVariant)
+wxVariant wxAutomationObject::GetProperty(const wxString& property,
+        const wxVariant& arg1, const wxVariant& arg2,
+        const wxVariant& arg3, const wxVariant& arg4,
+        const wxVariant& arg5, const wxVariant& arg6)
 {
-       ClearVariant(&oleVariant);
-       if (variant.IsNull())
-       {
-               oleVariant.vt = VT_NULL;
-               return TRUE;
-       }
-
-    wxString type(variant.GetType());
-
-    if (type == "long")
+    const wxVariant** args = new const wxVariant*[6];
+    int i = 0;
+    if (!arg1.IsNull())
     {
-        oleVariant.vt = VT_I4;
-        oleVariant.lVal = variant.GetLong() ;
+        args[i] = & arg1;
+        i ++;
     }
-    else if (type == "double")
+    if (!arg2.IsNull())
     {
-        oleVariant.vt = VT_R8;
-        oleVariant.dblVal = variant.GetDouble();
+        args[i] = & arg2;
+        i ++;
     }
-    else if (type == "bool")
+    if (!arg3.IsNull())
     {
-        oleVariant.vt = VT_BOOL;
-        // 'bool' required for VC++ 4 apparently
-#if defined(__WATCOMC__) || (defined(__VISUALC__) && (__VISUALC__ <= 1000))
-        oleVariant.bool = variant.GetBool();
-#else
-        oleVariant.boolVal = variant.GetBool();
-#endif
+        args[i] = & arg3;
+        i ++;
+    }
+    if (!arg4.IsNull())
+    {
+        args[i] = & arg4;
+        i ++;
+    }
+    if (!arg5.IsNull())
+    {
+        args[i] = & arg5;
+        i ++;
     }
-    else if (type == "string")
+    if (!arg6.IsNull())
     {
-        wxString str( variant.GetString() );
-        oleVariant.vt = VT_BSTR;
-        oleVariant.bstrVal = ConvertStringToOle(str);
+        args[i] = & arg6;
+        i ++;
     }
-    else if (type == "date")
+    wxVariant retVariant;
+    if (!Invoke(property, DISPATCH_PROPERTYGET, retVariant, i, NULL, args))
     {
-        wxDate date( variant.GetDate() );
-        oleVariant.vt = VT_DATE;
+        retVariant.MakeNull();
+    }
+    delete[] args;
+    return retVariant;
+}
 
-               if (!OleDateFromTm(date.GetYear(), date.GetMonth(), date.GetDay(),
-                               0, 0, 0, oleVariant.date))
-                       return FALSE;
+bool wxAutomationObject::PutProperty(const wxString& property, int noArgs, wxVariant args[])
+{
+    wxVariant retVariant;
+    if (!Invoke(property, DISPATCH_PROPERTYPUT, retVariant, noArgs, args))
+    {
+        return false;
     }
-    else if (type == "time")
+    return true;
+}
+
+bool wxAutomationObject::PutPropertyArray(const wxString& property, int noArgs, const wxVariant **args)
+{
+    wxVariant retVariant;
+    if (!Invoke(property, DISPATCH_PROPERTYPUT, retVariant, noArgs, NULL, args))
     {
-        wxTime time( variant.GetTime() );
-        oleVariant.vt = VT_DATE;
+        return false;
+    }
+    return true;
+}
 
-               if (!OleDateFromTm(time.GetYear(), time.GetMonth(), time.GetDay(),
-                       time.GetHour(), time.GetMinute(), time.GetSecond(), oleVariant.date))
-                       return FALSE;
+bool wxAutomationObject::PutProperty(const wxString& property,
+        const wxVariant& arg1, const wxVariant& arg2,
+        const wxVariant& arg3, const wxVariant& arg4,
+        const wxVariant& arg5, const wxVariant& arg6)
+{
+    const wxVariant** args = new const wxVariant*[6];
+    int i = 0;
+    if (!arg1.IsNull())
+    {
+        args[i] = & arg1;
+        i ++;
     }
-    else if (type == "void*")
+    if (!arg2.IsNull())
     {
-        oleVariant.vt = VT_DISPATCH;
-        oleVariant.pdispVal = (IDispatch*) variant.GetVoidPtr();
+        args[i] = & arg2;
+        i ++;
     }
-    else if (type == "list" || type == "stringlist")
+    if (!arg3.IsNull())
     {
-        oleVariant.vt = VT_VARIANT | VT_ARRAY;
-
-           SAFEARRAY *psa;
-           SAFEARRAYBOUND saBound;
-           VARIANTARG *pvargBase;
-           VARIANTARG *pvarg;
-           int i, j;
-
-        int iCount = variant.GetCount();
-       
-           saBound.lLbound = 0;
-           saBound.cElements = iCount;
-       
-           psa = SafeArrayCreate(VT_VARIANT, 1, &saBound);
-           if (psa == NULL)
-                   return FALSE;
-       
-           SafeArrayAccessData(psa, (void**)&pvargBase);
-       
-           pvarg = pvargBase;
-           for (i = 0; i < iCount; i++)
-           {
-                   // copy each string in the list of strings
-            wxVariant eachVariant(variant[i]);
-            if (!ConvertVariantToOle(eachVariant, * pvarg))
-            {
-                           // memory failure:  back out and free strings alloc'ed up to
-                           // now, and then the array itself.
-                           pvarg = pvargBase;
-                           for (j = 0; j < i; j++)
-                           {
-                                   SysFreeString(pvarg->bstrVal);
-                                   pvarg++;
-                           }
-                           SafeArrayDestroy(psa);
-                           return FALSE;
-                   }
-                   pvarg++;
-           }
-       
-           SafeArrayUnaccessData(psa);
-
-        oleVariant.parray = psa;
+        args[i] = & arg3;
+        i ++;
     }
-    else
+    if (!arg4.IsNull())
+    {
+        args[i] = & arg4;
+        i ++;
+    }
+    if (!arg5.IsNull())
     {
-        oleVariant.vt = VT_NULL;
-        return FALSE;
+        args[i] = & arg5;
+        i ++;
     }
-    return TRUE;
+    if (!arg6.IsNull())
+    {
+        args[i] = & arg6;
+        i ++;
+    }
+    wxVariant retVariant;
+    bool ret = Invoke(property, DISPATCH_PROPERTYPUT, retVariant, i, NULL, args);
+    delete[] args;
+    return ret;
 }
 
-#ifndef VT_TYPEMASK
-#define VT_TYPEMASK 0xfff
-#endif
 
-bool ConvertOleToVariant(const VARIANTARG& oleVariant, wxVariant& variant)
+// Uses DISPATCH_PROPERTYGET
+// and returns a dispatch pointer. The calling code should call Release
+// on the pointer, though this could be implicit by constructing an wxAutomationObject
+// with it and letting the destructor call Release.
+WXIDISPATCH* wxAutomationObject::GetDispatchProperty(const wxString& property, int noArgs, wxVariant args[]) const
 {
-       switch (oleVariant.vt & VT_TYPEMASK)
-       {
-       case VT_BSTR:
-               {
-                       wxString str(ConvertStringFromOle(oleVariant.bstrVal));
-                       variant = str;
-                       break;
-               }
-       case VT_DATE:
-               {
-                       struct tm tmTemp;
-                       if (!TmFromOleDate(oleVariant.date, tmTemp))
-                               return FALSE;
-
-                       wxDate date(tmTemp.tm_yday, tmTemp.tm_mon, tmTemp.tm_year);
-                       wxTime time(date, tmTemp.tm_hour, tmTemp.tm_min, tmTemp.tm_sec);
-
-                       variant = time;
-                       break;
-               }
-       case VT_I4:
-               {
-                       variant = (long) oleVariant.lVal;
-                       break;
-               }
-       case VT_I2:
-               {
-                       variant = (long) oleVariant.iVal;
-                       break;
-               }
-
-       case VT_BOOL:
-               {
-#if defined(__WATCOMC__) || (defined(_MSC_VER) && (_MSC_VER <= 1000)) //GC
-                       variant = (bool) (oleVariant.bool != 0);
-#else
-                       variant = (bool) (oleVariant.boolVal != 0);
-#endif
-                       break;
-               }
-       case VT_R8:
-               {
-                       variant = oleVariant.dblVal;
-                       break;
-               }
-       case VT_ARRAY:
-               {
-                       variant.ClearList();
-
-                       int cDims, cElements, i;
-                       VARIANTARG* pvdata;
-
-                       // Iterate the dimensions: number of elements is x*y*z
-                       for (cDims = 0, cElements = 1;
-                               cDims < oleVariant.parray->cDims; cDims ++)
-                                       cElements *= oleVariant.parray->rgsabound[cDims].cElements;
-
-                       // Get a pointer to the data
-                       HRESULT hr = SafeArrayAccessData(oleVariant.parray, (void HUGEP* FAR*) & pvdata);
-                       if (hr != NOERROR)
-                               return FALSE;
-                       // Iterate the data.
-                       for (i = 0; i < cElements; i++)
-                       {
-                               VARIANTARG& oleElement = pvdata[i];
-                               wxVariant vElement;
-                               if (!ConvertOleToVariant(oleElement, vElement))
-                                       return FALSE;
-                               
-                               variant.Append(vElement);
-                       }
-                       SafeArrayUnaccessData(oleVariant.parray);
-                       break;
-               }
-       case VT_DISPATCH:
-               {
-                       variant = (void*) oleVariant.pdispVal;
-                       break;
-               }
-       case VT_NULL:
-               {
-                       variant.MakeNull();
-                       break;
-               }
-       case VT_EMPTY:
-               {
-                       break;  // Ignore Empty Variant, used only during destruction of objects
-               }
-       default:
-               {
-                       wxLogError("wxAutomationObject::ConvertOleToVariant: Unknown variant value type");
-                       return FALSE;
-               }
-       }
-    return TRUE;
-}
+    wxVariant retVariant;
+    if (Invoke(property, DISPATCH_PROPERTYGET, retVariant, noArgs, args))
+    {
+        if (retVariant.GetType() == wxT("void*"))
+        {
+            return (WXIDISPATCH*) retVariant.GetVoidPtr();
+        }
+    }
 
-static BSTR ConvertStringToOle(const wxString& str)
-{
-/*
-       unsigned int len = strlen((const char*) str);
-       unsigned short* s = new unsigned short[len*2+2];
-       unsigned int i;
-       memset(s, 0, len*2+2);
-       for (i=0; i < len; i++)
-               s[i*2] = str[i];
-*/
-       BasicString bstr((const char*) str);
-       return bstr.Get();
+    return NULL;
 }
 
-static wxString ConvertStringFromOle(BSTR bStr)
+// Uses DISPATCH_PROPERTYGET
+// and returns a dispatch pointer. The calling code should call Release
+// on the pointer, though this could be implicit by constructing an wxAutomationObject
+// with it and letting the destructor call Release.
+WXIDISPATCH* wxAutomationObject::GetDispatchProperty(const wxString& property, int noArgs, const wxVariant **args) const
 {
-       int len = SysStringLen(bStr) + 1;
-       char    *buf = new char[len];
-       int i = wcstombs( buf, bStr, len);
+    wxVariant retVariant;
+    if (Invoke(property, DISPATCH_PROPERTYGET, retVariant, noArgs, NULL, args))
+    {
+        if (retVariant.GetType() == wxT("void*"))
+        {
+            return (WXIDISPATCH*) retVariant.GetVoidPtr();
+        }
+    }
 
-       wxString str(buf);
-       delete[] buf;
-       return str;
+    return NULL;
 }
 
-// ----------------------------------------------------------------------------
-// BasicString
-// ----------------------------------------------------------------------------
 
-// ctor takes an ANSI string and transforms it to Unicode
-BasicString::BasicString(const char *sz)
+// A way of initialising another wxAutomationObject with a dispatch object
+bool wxAutomationObject::GetObject(wxAutomationObject& obj, const wxString& property, int noArgs, wxVariant args[]) const
 {
-  // get the size of required buffer
-  UINT lenAnsi = strlen(sz);
-  #ifdef __MWERKS__
-  UINT lenWide = lenAnsi * 2 ;
-  #else
-  UINT lenWide = mbstowcs(NULL, sz, lenAnsi);
-  #endif
-
-  if ( lenWide > 0 ) {
-    m_wzBuf = new OLECHAR[lenWide + 1];
-    mbstowcs(m_wzBuf, sz, lenAnsi);
-    m_wzBuf[lenWide] = L'\0';
-  }
-  else {
-    m_wzBuf = NULL;
-  }
+    WXIDISPATCH* dispatch = GetDispatchProperty(property, noArgs, args);
+    if (dispatch)
+    {
+        obj.SetDispatchPtr(dispatch);
+        obj.SetLCID(GetLCID());
+        return true;
+    }
+    else
+        return false;
 }
 
-// dtor frees memory
-BasicString::~BasicString()
+// A way of initialising another wxAutomationObject with a dispatch object
+bool wxAutomationObject::GetObject(wxAutomationObject& obj, const wxString& property, int noArgs, const wxVariant **args) const
 {
-  delete [] m_wzBuf;
+    WXIDISPATCH* dispatch = GetDispatchProperty(property, noArgs, args);
+    if (dispatch)
+    {
+        obj.SetDispatchPtr(dispatch);
+        obj.SetLCID(GetLCID());
+        return true;
+    }
+    else
+        return false;
 }
 
-/////////////////////////////////////////////////////////////////////////////
-// COleDateTime class HELPERS - implementation
-
-BOOL OleDateFromTm(WORD wYear, WORD wMonth, WORD wDay,
-       WORD wHour, WORD wMinute, WORD wSecond, DATE& dtDest)
+namespace
 {
-       // Validate year and month (ignore day of week and milliseconds)
-       if (wYear > 9999 || wMonth < 1 || wMonth > 12)
-               return FALSE;
 
-       //  Check for leap year and set the number of days in the month
-       BOOL bLeapYear = ((wYear & 3) == 0) &&
-               ((wYear % 100) != 0 || (wYear % 400) == 0);
+HRESULT wxCLSIDFromProgID(const wxString& progId, CLSID& clsId)
+{
+    HRESULT hr = CLSIDFromProgID(wxBasicString(progId), &clsId);
+    if ( FAILED(hr) )
+    {
+        wxLogSysError(hr, _("Failed to find CLSID of \"%s\""), progId);
+    }
+    return hr;
+}
 
-       int nDaysInMonth =
-               rgMonthDays[wMonth] - rgMonthDays[wMonth-1] +
-               ((bLeapYear && wDay == 29 && wMonth == 2) ? 1 : 0);
+void *DoCreateInstance(const wxString& progId, const CLSID& clsId)
+{
+    // get the server IDispatch interface
+    //
+    // NB: using CLSCTX_INPROC_HANDLER results in failure when getting
+    //     Automation interface for Microsoft Office applications so don't use
+    //     CLSCTX_ALL which includes it
+    void *pDispatch = NULL;
+    HRESULT hr = CoCreateInstance(clsId, NULL, CLSCTX_SERVER,
+                                  IID_IDispatch, &pDispatch);
+    if (FAILED(hr))
+    {
+        wxLogSysError(hr, _("Failed to create an instance of \"%s\""), progId);
+        return NULL;
+    }
 
-       // Finish validating the date
-       if (wDay < 1 || wDay > nDaysInMonth ||
-               wHour > 23 || wMinute > 59 ||
-               wSecond > 59)
-       {
-               return FALSE;
-       }
+    return pDispatch;
+}
 
-       // Cache the date in days and time in fractional days
-       long nDate;
-       double dblTime;
+} // anonymous namespace
 
-       //It is a valid date; make Jan 1, 1AD be 1
-       nDate = wYear*365L + wYear/4 - wYear/100 + wYear/400 +
-               rgMonthDays[wMonth-1] + wDay;
+// Get a dispatch pointer from the current object associated
+// with a ProgID
+bool wxAutomationObject::GetInstance(const wxString& progId, int flags) const
+{
+    if (m_dispatchPtr)
+        return false;
 
-       //  If leap year and it's before March, subtract 1:
-       if (wMonth <= 2 && bLeapYear)
-               --nDate;
+    CLSID clsId;
+    HRESULT hr = wxCLSIDFromProgID(progId, clsId);
+    if (FAILED(hr))
+        return false;
 
-       //  Offset so that 12/30/1899 is 0
-       nDate -= 693959L;
+    IUnknown *pUnk = NULL;
+    hr = GetActiveObject(clsId, NULL, &pUnk);
+    if (FAILED(hr))
+    {
+        if ( flags & wxAutomationInstance_CreateIfNeeded )
+        {
+            const_cast<wxAutomationObject *>(this)->
+                m_dispatchPtr = DoCreateInstance(progId, clsId);
+            if ( m_dispatchPtr )
+                return true;
+        }
+        else
+        {
+            // Log an error except if we're supposed to fail silently when the
+            // error is that no current instance exists.
+            if ( hr != MK_E_UNAVAILABLE ||
+                    !(flags & wxAutomationInstance_SilentIfNone) )
+            {
+                wxLogSysError(hr,
+                              _("Cannot get an active instance of \"%s\""),
+                              progId);
+            }
+        }
 
-       dblTime = (((long)wHour * 3600L) +  // hrs in seconds
-               ((long)wMinute * 60L) +  // mins in seconds
-               ((long)wSecond)) / 86400.;
+        return false;
+    }
 
-       dtDest = (double) nDate + ((nDate >= 0) ? dblTime : -dblTime);
+    hr = pUnk->QueryInterface(IID_IDispatch, (LPVOID*) &m_dispatchPtr);
+    if (FAILED(hr))
+    {
+        wxLogSysError(hr,
+                      _("Failed to get OLE automation interface for \"%s\""),
+                      progId);
+        return false;
+    }
 
-       return TRUE;
+    return true;
 }
 
-BOOL TmFromOleDate(DATE dtSrc, struct tm& tmDest)
+// Get a dispatch pointer from a new object associated
+// with the given ProgID
+bool wxAutomationObject::CreateInstance(const wxString& progId) const
 {
-       // The legal range does not actually span year 0 to 9999.
-       if (dtSrc > MAX_DATE || dtSrc < MIN_DATE) // about year 100 to about 9999
-               return FALSE;
-
-       long nDays;             // Number of days since Dec. 30, 1899
-       long nDaysAbsolute;     // Number of days since 1/1/0
-       long nSecsInDay;        // Time in seconds since midnight
-       long nMinutesInDay;     // Minutes in day
-
-       long n400Years;         // Number of 400 year increments since 1/1/0
-       long n400Century;       // Century within 400 year block (0,1,2 or 3)
-       long n4Years;           // Number of 4 year increments since 1/1/0
-       long n4Day;             // Day within 4 year block
-                                                       //  (0 is 1/1/yr1, 1460 is 12/31/yr4)
-       long n4Yr;              // Year within 4 year block (0,1,2 or 3)
-       BOOL bLeap4 = TRUE;     // TRUE if 4 year block includes leap year
-
-       double dblDate = dtSrc; // tempory serial date
-
-       // If a valid date, then this conversion should not overflow
-       nDays = (long)dblDate;
-
-       // Round to the second
-       dblDate += ((dtSrc > 0.0) ? HALF_SECOND : -HALF_SECOND);
-
-       nDaysAbsolute = (long)dblDate + 693959L; // Add days from 1/1/0 to 12/30/1899
-
-       dblDate = fabs(dblDate);
-       nSecsInDay = (long)((dblDate - floor(dblDate)) * 86400.);
-
-       // Calculate the day of week (sun=1, mon=2...)
-       //   -1 because 1/1/0 is Sat.  +1 because we want 1-based
-       tmDest.tm_wday = (int)((nDaysAbsolute - 1) % 7L) + 1;
-
-       // Leap years every 4 yrs except centuries not multiples of 400.
-       n400Years = (long)(nDaysAbsolute / 146097L);
-
-       // Set nDaysAbsolute to day within 400-year block
-       nDaysAbsolute %= 146097L;
-
-       // -1 because first century has extra day
-       n400Century = (long)((nDaysAbsolute - 1) / 36524L);
-
-       // Non-leap century
-       if (n400Century != 0)
-       {
-               // Set nDaysAbsolute to day within century
-               nDaysAbsolute = (nDaysAbsolute - 1) % 36524L;
-
-               // +1 because 1st 4 year increment has 1460 days
-               n4Years = (long)((nDaysAbsolute + 1) / 1461L);
-
-               if (n4Years != 0)
-                       n4Day = (long)((nDaysAbsolute + 1) % 1461L);
-               else
-               {
-                       bLeap4 = FALSE;
-                       n4Day = (long)nDaysAbsolute;
-               }
-       }
-       else
-       {
-               // Leap century - not special case!
-               n4Years = (long)(nDaysAbsolute / 1461L);
-               n4Day = (long)(nDaysAbsolute % 1461L);
-       }
-
-       if (bLeap4)
-       {
-               // -1 because first year has 366 days
-               n4Yr = (n4Day - 1) / 365;
-
-               if (n4Yr != 0)
-                       n4Day = (n4Day - 1) % 365;
-       }
-       else
-       {
-               n4Yr = n4Day / 365;
-               n4Day %= 365;
-       }
-
-       // n4Day is now 0-based day of year. Save 1-based day of year, year number
-       tmDest.tm_yday = (int)n4Day + 1;
-       tmDest.tm_year = n400Years * 400 + n400Century * 100 + n4Years * 4 + n4Yr;
-
-       // Handle leap year: before, on, and after Feb. 29.
-       if (n4Yr == 0 && bLeap4)
-       {
-               // Leap Year
-               if (n4Day == 59)
-               {
-                       /* Feb. 29 */
-                       tmDest.tm_mon = 2;
-                       tmDest.tm_mday = 29;
-                       goto DoTime;
-               }
-
-               // Pretend it's not a leap year for month/day comp.
-               if (n4Day >= 60)
-                       --n4Day;
-       }
-
-       // Make n4DaY a 1-based day of non-leap year and compute
-       //  month/day for everything but Feb. 29.
-       ++n4Day;
-
-       // Month number always >= n/32, so save some loop time */
-       for (tmDest.tm_mon = (n4Day >> 5) + 1;
-               n4Day > rgMonthDays[tmDest.tm_mon]; tmDest.tm_mon++);
-
-       tmDest.tm_mday = (int)(n4Day - rgMonthDays[tmDest.tm_mon-1]);
-
-DoTime:
-       if (nSecsInDay == 0)
-               tmDest.tm_hour = tmDest.tm_min = tmDest.tm_sec = 0;
-       else
-       {
-               tmDest.tm_sec = (int)nSecsInDay % 60L;
-               nMinutesInDay = nSecsInDay / 60L;
-               tmDest.tm_min = (int)nMinutesInDay % 60;
-               tmDest.tm_hour = (int)nMinutesInDay / 60;
-       }
-
-       return TRUE;
-}
+    if (m_dispatchPtr)
+        return false;
 
-void TmConvertToStandardFormat(struct tm& tmSrc)
-{
-       // Convert afx internal tm to format expected by runtimes (_tcsftime, etc)
-       tmSrc.tm_year -= 1900;  // year is based on 1900
-       tmSrc.tm_mon -= 1;      // month of year is 0-based
-       tmSrc.tm_wday -= 1;     // day of week is 0-based
-       tmSrc.tm_yday -= 1;     // day of year is 0-based
-}
+    CLSID clsId;
+    HRESULT hr = wxCLSIDFromProgID(progId, clsId);
+    if (FAILED(hr))
+        return false;
 
-double DoubleFromDate(DATE dt)
-{
-       // No problem if positive
-       if (dt >= 0)
-               return dt;
-
-       // If negative, must convert since negative dates not continuous
-       // (examples: -1.25 to -.75, -1.50 to -.50, -1.75 to -.25)
-       double temp = ceil(dt);
-       return temp - (dt - temp);
+    const_cast<wxAutomationObject *>(this)->
+        m_dispatchPtr = DoCreateInstance(progId, clsId);
+
+    return m_dispatchPtr != NULL;
 }
 
-DATE DateFromDouble(double dbl)
+LCID wxAutomationObject::GetLCID() const
 {
-       // No problem if positive
-       if (dbl >= 0)
-               return dbl;
-
-       // If negative, must convert since negative dates not continuous
-       // (examples: -.75 to -1.25, -.50 to -1.50, -.25 to -1.75)
-       double temp = floor(dbl); // dbl is now whole part
-       return temp + (temp - dbl);
+    return m_lcid;
 }
 
-/*
- *  ClearVariant
- *
- *  Zeros a variant structure without regard to current contents
- */
-static void ClearVariant(VARIANTARG *pvarg)
+void wxAutomationObject::SetLCID(LCID lcid)
 {
-       pvarg->vt = VT_EMPTY;
-       pvarg->wReserved1 = 0;
-       pvarg->wReserved2 = 0;
-       pvarg->wReserved3 = 0;
-       pvarg->lVal = 0;
+    m_lcid = lcid;
 }
 
-/*
- *  ReleaseVariant
- *
- *  Clears a particular variant structure and releases any external objects
- *  or memory contained in the variant.  Supports the data types listed above.
- */
-static void ReleaseVariant(VARIANTARG *pvarg)
+static void
+ShowException(const wxString& member,
+              HRESULT hr,
+              EXCEPINFO *pexcep,
+              unsigned int uiArgErr)
 {
-       VARTYPE vt;
-       VARIANTARG _huge *pvargArray;
-       long lLBound, lUBound, l;
-       
-       vt = pvarg->vt & 0xfff;         // mask off flags
-       
-       // check if an array.  If so, free its contents, then the array itself.
-       if (V_ISARRAY(pvarg)) 
-       {
-               // variant arrays are all this routine currently knows about.  Since a
-               // variant can contain anything (even other arrays), call ourselves
-               // recursively.
-               if (vt == VT_VARIANT) 
-               {
-                       SafeArrayGetLBound(pvarg->parray, 1, &lLBound);
-                       SafeArrayGetUBound(pvarg->parray, 1, &lUBound);
-                       
-                       if (lUBound > lLBound) 
-                       {
-                               lUBound -= lLBound;
-                               
-                               SafeArrayAccessData(pvarg->parray, (void**)&pvargArray);
-                               
-                               for (l = 0; l < lUBound; l++) 
-                               {
-                                       ReleaseVariant(pvargArray);
-                                       pvargArray++;
-                               }
-                               
-                               SafeArrayUnaccessData(pvarg->parray);
-                       }
-               }
-               else 
-               {
-                       wxLogWarning("ReleaseVariant: Array contains non-variant type");
-               }
-               
-               // Free the array itself.
-               SafeArrayDestroy(pvarg->parray);
-       }
-       else 
-       {
-               switch (vt) 
-               {
-                       case VT_DISPATCH:
-                               if (pvarg->pdispVal)
-                                       pvarg->pdispVal->Release();
-                               break;
-                               
-                       case VT_BSTR:
-                               SysFreeString(pvarg->bstrVal);
-                               break;
-                               
-                       case VT_I2:
-                       case VT_BOOL:
-                       case VT_R8:
-                       case VT_ERROR:          // to avoid erroring on an error return from Excel
-                               // no work for these types
-                               break;
-                               
-                       default:
-                               wxLogWarning("ReleaseVariant: Unknown type");
-                               break;
-               }
-       }
-       
-       ClearVariant(pvarg);
-}
+    wxString message;
+    switch (GetScode(hr))
+    {
+        case DISP_E_UNKNOWNNAME:
+            message = _("Unknown name or named argument.");
+            break;
 
-#if 0
+        case DISP_E_BADPARAMCOUNT:
+            message = _("Incorrect number of arguments.");
+            break;
 
-void ShowException(LPOLESTR szMember, HRESULT hr, EXCEPINFO *pexcep, unsigned int uiArgErr)
-{
-       TCHAR szBuf[512];
-       
-       switch (GetScode(hr)) 
-       {
-               case DISP_E_UNKNOWNNAME:
-                       wsprintf(szBuf, L"%s: Unknown name or named argument.", szMember);
-                       break;
-       
-               case DISP_E_BADPARAMCOUNT:
-                       wsprintf(szBuf, L"%s: Incorrect number of arguments.", szMember);
-                       break;
-                       
-               case DISP_E_EXCEPTION:
-                       wsprintf(szBuf, L"%s: Error %d: ", szMember, pexcep->wCode);
-                       if (pexcep->bstrDescription != NULL)
-                               lstrcat(szBuf, pexcep->bstrDescription);
-                       else
-                               lstrcat(szBuf, L"<<No Description>>");
-                       break;
-                       
-               case DISP_E_MEMBERNOTFOUND:
-                       wsprintf(szBuf, L"%s: method or property not found.", szMember);
-                       break;
-               
-               case DISP_E_OVERFLOW:
-                       wsprintf(szBuf, L"%s: Overflow while coercing argument values.", szMember);
-                       break;
-               
-               case DISP_E_NONAMEDARGS:
-                       wsprintf(szBuf, L"%s: Object implementation does not support named arguments.",
-                                               szMember);
-                   break;
-                   
-               case DISP_E_UNKNOWNLCID:
-                       wsprintf(szBuf, L"%s: The locale ID is unknown.", szMember);
-                       break;
-               
-               case DISP_E_PARAMNOTOPTIONAL:
-                       wsprintf(szBuf, L"%s: Missing a required parameter.", szMember);
-                       break;
-               
-               case DISP_E_PARAMNOTFOUND:
-                       wsprintf(szBuf, L"%s: Argument not found, argument %d.", szMember, uiArgErr);
-                       break;
-                       
-               case DISP_E_TYPEMISMATCH:
-                       wsprintf(szBuf, L"%s: Type mismatch, argument %d.", szMember, uiArgErr);
-                       break;
-
-               default:
-                       wsprintf(szBuf, L"%s: Unknown error occured.", szMember);
-                       break;
-       }
-       
-       wxLogWarning(szBuf);
-}
+        case DISP_E_EXCEPTION:
+            if ( pexcep )
+            {
+                if ( pexcep->bstrDescription )
+                    message << pexcep->bstrDescription << wxS(" ");
+                message += wxString::Format(wxS("error code %u"), pexcep->wCode);
+            }
+            else
+            {
+                message = _("Unknown exception");
+            }
+            break;
 
-#endif
+        case DISP_E_MEMBERNOTFOUND:
+            message = _("Method or property not found.");
+            break;
+
+        case DISP_E_OVERFLOW:
+            message = _("Overflow while coercing argument values.");
+            break;
+
+        case DISP_E_NONAMEDARGS:
+            message = _("Object implementation does not support named arguments.");
+            break;
+
+        case DISP_E_UNKNOWNLCID:
+            message = _("The locale ID is unknown.");
+            break;
+
+        case DISP_E_PARAMNOTOPTIONAL:
+            message = _("Missing a required parameter.");
+            break;
+
+        case DISP_E_PARAMNOTFOUND:
+            message.Printf(_("Argument %u not found."), uiArgErr);
+            break;
+
+        case DISP_E_TYPEMISMATCH:
+            message.Printf(_("Type mismatch in argument %u."), uiArgErr);
+            break;
+
+        case ERROR_FILE_NOT_FOUND:
+            message = _("The system cannot find the file specified.");
+            break;
+
+        case REGDB_E_CLASSNOTREG:
+            message = _("Class not registered.");
+            break;
+
+        default:
+            message.Printf(_("Unknown error %08x"), hr);
+            break;
+    }
+
+    wxLogError(_("OLE Automation error in %s: %s"), member, message);
+}
 
+#endif // wxUSE_OLE_AUTOMATION